Keras verbose training progress bar writing a new

running a Dense feed-forward neural net in Keras. there are class_weights for two outputs, and sample_weights for a third output. fore some reason it prints the progress verbose display for each batch calculated, and not updating the print on the same line as its supposed to... Did this ever happens to you? How is it fixed? From the shell:

42336/747322 [====>.........................] - ETA: 79s - loss: 20.7154 - x1_loss: 9.5913 - x2_loss: 10.0536 - x3_loss: 1.0705 - x1_acc: 0.6930 - x2_acc: 0.4433 - x3_acc: 0.6821
143360/747322 [====>.........................] - ETA: 78s - loss: 20.7387 - x1_loss: 9.6131 - x2_loss: 10.0555 - x3_loss: 1.0702 - x1_acc: 0.6930 - x2_acc: 0.4432 - x3_acc: 0.6820
144384/747322 [====>.........................] - ETA: 78s - loss: 20.7362 - x1_loss: 9.6067 - x2_loss: 10.0608 - x3_loss: 1.0687 - x1_acc: 0.6930 - x2_acc: 0.4429 - x3_acc: 0.6817
145408/747322 [====>.........................] - ETA: 78s - loss: 20.7257 - x1_loss: 9.5985 - x2_loss: 10.0571 - x3_loss: 1.0702 - x1_acc: 0.6929 - x2_acc: 0.4428 - x3_acc: 0.6815
146432/747322 [====>.........................] - ETA: 78s - loss: 20.7145 - x1_loss: 9.5849 - x2_loss: 10.0605 - x3_loss: 1.0691 - x1_acc: 0.6932 - x2_acc: 0.4429 - x3_acc: 0.6816
147456/747322 [====>.........................] - ETA: 78s - loss: 20.7208 - x1_loss: 9.5859 - x2_loss: 10.0662 - x3_loss: 1.0688 - x1_acc: 0.6931 - x2_acc: 0.4429 - x3_acc: 0.6815
148480/747322 [====>.........................] - ETA: 78s - loss: 20.7078 - x1_loss: 9.5762 - x2_loss: 10.0636 - x3_loss: 1.0680 - x1_acc: 0.6932 - x2_acc: 0.4430 - x3_acc: 0.6815
149504/747322 [=====>........................] - ETA: 77s - loss: 20.6987 - x1_loss: 9.5749 - x2_loss: 10.0555 - x3_loss: 1.0683 - x1_acc: 0.6931 - x2_acc: 0.4430 - x3_acc: 0.6817
150528/747322 [=====>........................] - ETA: 77s - loss: 20.9883 - x1_loss: 9.5688 - x2_loss: 10.3509 - x3_loss: 1.0686 - x1_acc: 0.6928 - x2_acc: 0.4428 - x3_acc: 0.6819
151552/747322 [=====>........................] - ETA: 77s - loss: 20.9721 - x1_loss: 9.5606 - x2_loss: 10.3435 - x3_loss: 1.0679 - x1_acc: 0.6927 - x2_acc: 0.4426 - x3_acc: 0.6821
152576/747322 [=====>........................] - ETA: 77s - loss: 20.9585 - x1_loss: 9.5558 - x2_loss: 10.3355 - x3_loss: 1.0672 - x1_acc: 0.6926 - x2_acc: 0.4425 - x3_acc: 0.6822
153600/747322 [=====>........................] - ETA: 77s - loss: 20.9409 - x1_loss: 9.5447 - x2_loss: 10.3300 - x3_loss: 1.0662 - x1_acc: 0.6925 - x2_acc: 0.4426 - x3_acc: 0.6822
154624/747322 [=====>........................] - ETA: 77s - loss: 20.9254 - x1_loss: 9.5341 - x2_loss: 10.3250 - x3_loss: 1.0663 - x1_acc: 0.6924 - x2_acc: 0.4425 - x3_acc: 0.6825
155648/747322 [=====>........................] - ETA: 77s - loss: 20.9189 - x1_loss: 9.5270 - x2_loss: 10.3249 - x3_loss: 1.0670 - x1_acc: 0.6925 - x2_acc: 0.4425 - x3_acc: 0.6825
156672/747322 [=====>........................] - ETA: 76s - loss: 20.9069 - x1_loss: 9.5155 - x2_loss: 10.3256 - x3_loss: 1.0658 - x1_acc: 0.6927 - x2_acc: 0.4423 - x3_acc: 0.6827
157696/747322 [=====>........................] - ETA: 76s - loss: 20.9275 - x1_loss: 9.5461 - x2_loss: 10.3163 - x3_loss: 1.0651 - x1_acc: 0.6927 - x2_acc: 0.4422 - x3_acc: 0.6828
158720/747322 [=====>........................] - ETA: 76s - loss: 21.4809 - x1_loss: 10.1018 - x2_loss: 10.3133 - x3_loss: 1.0659 - x1_acc: 0.6928 - x2_acc: 0.4422 - x3_acc: 0.6829
159744/747322 [=====>........................] - ETA: 76s - loss: 21.4617 - x1_loss: 10.0871 - x2_loss: 10.3093 - x3_loss: 1.0653 - x1_acc: 0.6928 - x2_acc: 0.4421 - x3_acc: 0.6830
160768/747322 [=====>........................] - ETA: 76s - loss: 21.5462 - x1_loss: 10.1705 - x2_loss: 10.3105 - x3_loss: 1.0652 - x1_acc: 0.6928 - x2_acc: 0.4420 - x3_acc: 0.6832
161792/747322 [=====>........................] - ETA: 76s - loss: 21.5642 - x1_loss: 10.1849 - x2_loss: 10.3138 - x3_loss: 1.0655 - x1_acc: 0.6928 - x2_acc: 0.4418 - x3_acc: 0.6832
162816/747322 [=====>........................] - ETA: 76s - loss: 21.5508 - x1_loss: 10.1739 - x2_loss: 10.3118 - x3_loss: 1.0651 - x1_acc: 0.6928 - x2_acc: 0.4418 - x3_acc: 0.6833
163840/747322 [=====>........................] - ETA: 76s - loss: 21.5323 - x1_loss: 10.1606 - x2_loss: 10.3057 - x3_loss: 1.0659 - x1_acc: 0.6927 - x2_acc: 0.4419 - x3_acc: 0.6833
164864/747322 [=====>........................] - ETA: 75s - loss: 21.5282 - x1_loss: 10.1607 - x2_loss: 10.3016 - x3_loss: 1.0659 - x1_acc: 0.6926 - x2_acc: 0.4418 - x3_acc: 0.6834
165888/747322 [=====>........................] - ETA: 75s - loss: 21.5321 - x1_loss: 10.1696 - x2_loss: 10.2963 - x3_loss: 1.0662 - x1_acc: 0.6927 - x2_acc: 0.4417 - x3_acc: 0.6834
166912/747322 [=====>........................] - ETA: 75s - loss: 21.5131 - x1_loss: 10.1554 - x2_loss: 10.2912 - x3_loss: 1.0664 - x1_acc: 0.6927 - x2_acc: 0.4416 - x3_acc: 0.6833
167936/747322 [=====>........................] - ETA: 75s - loss: 21.5211 - x1_loss: 10.1649 - x2_loss: 10.2886 - x3_loss: 1.0676 - x1_acc: 0.6929 - x2_acc: 0.4415 - x3_acc: 0.6835
168960/747322 [=====>........................] - ETA: 75s - loss: 21.5049 - x1_loss: 10.1504 - x2_loss: 10.2870 - x3_loss: 1.0676 - x1_acc: 0.6930 - x2_acc: 0.4414 - x3_acc: 0.6835
169984/747322 [=====>........................] - ETA: 75s - loss: 21.5171 - x1_loss: 10.1684 - x2_loss: 10.2818 - x3_loss: 1.0670 - x1_acc: 0.6931 - x2_acc: 0.4414 - x3_acc: 0.6832
171008/747322 [=====>........................] - ETA: 75s - loss: 21.5036 - x1_loss: 10.1541 - x2_loss: 10.2816 - x3_loss: 1.0678 - x1_acc: 0.6931 - x2_acc: 0.4413 - x3_acc: 0.6828
172032/747322 [=====>........................] - ETA: 75s - loss: 21.4870 - x1_loss: 10.1377 - x2_loss: 10.2816 - x3_loss: 1.0677 - x1_acc: 0.6931 - x2_acc: 0.4413 - x3_acc: 0.6827
173056/747322 [=====>........................] - ETA: 75s - loss: 21.4729 - x1_loss: 10.1210 - x2_loss: 10.2836 - x3_loss: 1.0683 - x1_acc: 0.6931 - x2_acc: 0.4413 - x3_acc: 0.6824
174080/747322 [=====>........................] - ETA: 74s - loss: 21.4512 - x1_loss: 10.1085 - x2_loss: 10.2742 - x3_loss: 1.0685 - x1_acc: 0.6931 - x2_acc: 0.4414 - x3_acc: 0.6821
175104/747322 [======>.......................] - ETA: 74s - loss: 21.4315 - x1_loss: 10.0977 - x2_loss: 10.2647 - x3_loss: 1.0690 - x1_acc: 0.6931 - x2_acc: 0.4414 - x3_acc: 0.6817
176128/747322 [======>.......................] - ETA: 74s - loss: 21.4231 - x1_loss: 10.0880 - x2_loss: 10.2656 - x3_loss: 1.0695 - x1_acc: 0.6932 - x2_acc: 0.4412 - x3_acc: 0.6813
177152/747322 [======>.......................] - ETA: 74s - loss: 21.4059 - x1_loss: 10.0732 - x2_loss: 10.2639 - x3_loss: 1.0688 - x1_acc: 0.6931 - x2_acc: 0.4412 - x3_acc: 0.6809
178176/747322 [======>.......................] - ETA: 74s - loss: 21.4289 - x1_loss: 10.0967 - x2_loss: 10.2634 - x3_loss: 1.0688 - x1_acc: 0.6930 - x2_acc: 0.4413 - x3_acc: 0.6807
179200/747322 [======>.......................] - ETA: 74s - loss: 21.4329 - x1_loss: 10.1092 - x2_loss: 10.2557 - x3_loss: 1.0681 - x1_acc: 0.6930 - x2_acc: 0.4414 - x3_acc: 0.6807
180224/747322 [======>.......................] - ETA: 74s - loss: 21.4277 - x1_loss: 10.1099 - x2_loss: 10.2503 - x3_loss: 1.0675 - x1_acc: 0.6930 - x2_acc: 0.4415 - x3_acc: 0.6807
181248/747322 [======>.......................] - ETA: 73s - loss: 21.4088 - x1_loss: 10.0975 - x2_loss: 10.2441 - x3_loss: 1.0671 - x1_acc: 0.6929 - x2_acc: 0.4416 - x3_acc: 0.6808
182272/747322 [======>.......................] - ETA: 73s - loss: 21.3909 - x1_loss: 10.0841 - x2_loss: 10.2405 - x3_loss: 1.0663 - x1_acc: 0.6929 - x2_acc: 0.4415 - x3_acc: 0.6811
183296/747322 [======>.......................] - ETA: 73s - loss: 21.3775 - x1_loss: 10.0699 - x2_loss: 10.2416 - x3_loss: 1.0660 - x1_acc: 0.6927 - x2_acc: 0.4415 - x3_acc: 0.6813
184320/747322 [======>.......................] - ETA: 73s - loss: 21.3682 - x1_loss: 10.0664 - x2_loss: 10.2355 - x3_loss: 1.0662 - x1_acc: 0.6928 - x2_acc: 0.4417 - x3_acc: 0.6818
185344/747322 [======>.......................] - ETA: 73s - loss: 21.4162 - x1_loss: 10.1213 - x2_loss: 10.2291 - x3_loss: 1.0658 - x1_acc: 0.6927 - x2_acc: 0.4417 - x3_acc: 0.6821
186368/747322 [======>.......................] - ETA: 73s - loss: 21.3981 - x1_loss: 10.1050 - x2_loss: 10.2259 - x3_loss: 1.0672 - x1_acc: 0.6928 - x2_acc: 0.4418 - x3_acc: 0.6825
187392/747322 [======>.......................] - ETA: 73s - loss: 21.3793 - x1_loss: 10.0909 - x2_loss: 10.2212 - x3_loss: 1.0673 - x1_acc: 0.6928 - x2_acc: 0.4417 - x3_acc: 0.6827
188416/747322 [======>.......................] - ETA: 73s - loss: 21.3614 - x1_loss: 10.0784 - x2_loss: 10.2163 - x3_loss: 1.0668 - x1_acc: 0.6930 - x2_acc: 0.4418 - x3_acc: 0.6830
189440/747322 [======>.......................] - ETA: 72s - loss: 21.3736 - x1_loss: 10.0909 - x2_loss: 10.2169 - x3_loss: 1.0659 - x1_acc: 0.6930 - x2_acc: 0.4417 - x3_acc: 0.6833
190464/747322 [======>.......................] - ETA: 72s - loss: 21.4615 - x1_loss: 10.0802 - x2_loss: 10.3165 - x3_loss: 1.0648 - x1_acc: 0.6930 - x2_acc: 0.4418 - x3_acc: 0.6836
191488/747322 [======>.......................] - ETA: 72s - loss: 21.4493 - x1_loss: 10.0653 - x2_loss: 10.3194 - x3_loss: 1.0646 - x1_acc: 0.6930 - x2_acc: 0.4417 - x3_acc: 0.6837
192512/747322 [======>.......................] - ETA: 72s - loss: 21.4863 - x1_loss: 10.0997 - x2_loss: 10.3207 - x3_loss: 1.0659 - x1_acc: 0.6927 - x2_acc: 0.4416 - x3_acc: 0.6837
193536/747322 [======>.......................] - ETA: 72s - loss: 21.4750 - x1_loss: 10.0895 - x2_loss: 10.3198 - x3_loss: 1.0657 - x1_acc: 0.6929 - x2_acc: 0.4416 - x3_acc: 0.6839
194560/747322 [======>.......................] - ETA: 72s - loss: 21.4577 - x1_loss: 10.0755 - x2_loss: 10.3168 - x3_loss: 1.0654 - x1_acc: 0.6929 - x2_acc: 0.4416 - x3_acc: 0.6839
195584/747322 [======>.......................] - ETA: 72s - loss: 21.4429 - x1_loss: 10.0627 - x2_loss: 10.3148 - x3_loss: 1.0655 - x1_acc: 0.6929 - x2_acc: 0.4417 - x3_acc: 0.6838
196608/747322 [======>.......................] - ETA: 71s - loss: 21.4307 - x1_loss: 10.0558 - x2_loss: 10.3089 - x3_loss: 1.0660 - x1_acc: 0.6929 - x2_acc: 0.4418 - x3_acc: 0.6834
197632/747322 [======>.......................] - ETA: 71s - loss: 21.4446 - x1_loss: 10.0669 - x2_loss: 10.3107 - x3_loss: 1.0670 - x1_acc: 0.6929 - x2_acc: 0.4418 - x3_acc: 0.6830
198656/747322 [======>.......................] - ETA: 71s - loss: 21.4287 - x1_loss: 10.0552 - x2_loss: 10.3071 - x3_loss: 1.0665 - x1_acc: 0.6930 - x2_acc: 0.4418 - x3_acc: 0.6827
199680/747322 [=======>......................] - ETA: 71s - loss: 21.4168 - x1_loss: 10.0474 - x2_loss: 10.3034 - x3_loss: 1.0660 - x1_acc: 0.6931 - x2_acc: 0.4417 - x3_acc: 0.6823
200704/747322 [=======>......................] - ETA: 71s - loss: 21.4064 - x1_loss: 10.0385 - x2_loss: 10.3015 - x3_loss: 1.0664 - x1_acc: 0.6931 - x2_acc: 0.4417 - x3_acc: 0.6819
201728/747322 [=======>......................] - ETA: 71s - loss: 21.3954 - x1_loss: 10.0320 - x2_loss: 10.2974 - x3_loss: 1.0659 - x1_acc: 0.6931 - x2_acc: 0.4416 - x3_acc: 0.6817
202752/747322 [=======>......................] - ETA: 71s - loss: 21.3870 - x1_loss: 10.0243 - x2_loss: 10.2965 - x3_loss: 1.0662 - x1_acc: 0.6931 - x2_acc: 0.4415 - x3_acc: 0.6816
203776/747322 [=======>......................] - ETA: 70s - loss: 21.3782 - x1_loss: 10.0155 - x2_loss: 10.2954 - x3_loss: 1.0673 - x1_acc: 0.6929 - 

etc...

回答1:

I had a similar issue, but have not had the time to investigate it further. The problem seems to be related to the class Progbar in generic_utils.py of keras, see link, and perhaps Python >= 3.3.

The following lines are found in the update function of the class:

Line 107: sys.stdout.write('\b' * prev_total_width)
Line 108: sys.stdout.write('\r')

I simply removed line 107 as a quick fix, so instead of backspacing the previous line then performing a shift to the beginning of the line, I only perform the shift. I guess there is some better ways than altering the source code though.

回答2:

This seems to be a consistent problem with Keras. I tried to find the lines

sys.stdout.write('\b' * prev_total_width)

sys.stdout.write('\r')

at the Keras/utils/generic_utils.py file and they are (as of the current version) at 258 and 259 accordingly. I commented like 258 but this seems not to resolve the issue. I did manage to make the progress bar work by commenting the line:

line 303: sys.stdout.write(info)

It seems as if the info makes the bar too long for the terminal and so it breaks to a new line.

So I finally resolved the issue. It seems like it was rather simple at the end....

Just make the terminal wider...

Note: Tested on Linux Ubuntu 16.04 | Keras Version 2.0.5

回答3:

It was mentioned before, but I will rewrite it to be more visible for future users.

You have too narrow terminal to print all these values - just set width argument of Progbar constructor to smaller number or remove/rename some of the provided values.